http://www.amazon.com/Andersonville-MacKinlay-Kantor/dp/1501257366
I read the book when it first came out. It is a gripping novel.
http://www.imdb.com/title/tt0115097/
I haven't seen the mpvie.
I might add that the British maintained prison ships in NYC harbor during the Revolutionary War. The conditions were as bad as Andersonville. Washington wrote a formal letter of complaint to Howe to rectify the situation lest he (Washington) be moved to treat English prisoners with equal severity.
http://www.mountvernon.org/research-collections/digital-encyclopedia/article/prisoners-of-war/
Maranatha,
Bob